| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a carbonic acid gas recovery type fuel cell system which can efficiently recover carbonic acid gas in a system where PAFC anode exhaust gas is recycled as burner fuel for a reformer. <P>SOLUTION: City gas is sent to a desulfurizer 3. Fuel gas exiting the desulfurizer 3 is mixed with steam in an ejector 5 before being forwarded to a reformer 7. In the reformer 7, the fuel gas is reformed to hydrogen rich gas. The hydrogen rich gas exiting the reformer 7 is further sent to a CO transformer 9 in which carbon monoxide (CO) in the hydrogen rich gas is transformed into carbon dioxide (carbonic acid gas). Anode gas exiting the CO transformer is forwarded to a carbon dioxide recovery apparatus 27. The carbon dioxide recovery apparatus 27 consists of a carbon dioxide concentration apparatus 29 and a carbon dioxide liquefaction apparatus 31. The carbon dioxide concentration apparatus 29 is composed of an apparatus which concentrates carbon dioxide by one of absorption separation, adsorption separation, membrane separation, membrane/absorption hybrid separation, and gas hydrate separation. <P>COPYRIGHT: (C)2013,JPO&INPIT |
